spotled

SPOTLED Python Library

This allows you to control bluetooth led name badges which use the SPOTLED app. You can buy them here:

• https://smile.amazon.com/gp/product/B07YD4DM1Y/
• https://a.aliexpress.com/_mt5JedG

Disclaimer

Notice! This library is not affilated with the creator of this product.

If you brick your device (albeit unlikely) with this library, DO NOT BLAME ME!

Installation

You need python3-gattlib, which is installable on debian with:

sudo apt install python3-gattlib

Then install the package with:

sudo pip3 install spotled

Example usage

import spotled
sender = spotled.LedConnection('mac address of your device')

sender.set_screen_mode(spotled.ScreenMode.NORMAL) # change screen orientation
sender.set_brightness(100) # brightness seems to be 0-100

# send text using the default 6x12 font
sender.set_text('Hello world!')

# send text which does not move
sender.set_text(' Static', effect=spotled.Effect.NONE)

# send smaller text (you can use any 12x12 or smaller yaff or draw font)
sender.set_text('Static Text!', effect=spotled.Effect.NONE, font="4x6")

# send multiple pages of 2-line text
# you can adjust time per frame with the frame_duration param
sender.set_text_lines("You can show several pages of text!\nNewlines\nare allowed.")

# send multiple pages of scrolling 2-line text
# you can adjust animation speed with the speed param
sender.set_text_lines("A long time ago in a galaxy far, far away....", effect=spotled.Effect.SCROLL_UP)

# send number bars (used for music visualization)
sender.send_data(spotled.SendDataCommand(spotled.NumberBarData([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 11, 10, 9]).serialize()))

# send a static image (using the animation feature)
sender.send_data(
    spotled.SendDataCommand(
        spotled.AnimationData([
            spotled.FrameData(48, 12, spotled.gen_bitmap(
                '111111111111111111111111111111111111111111111111'
                '1..............................................1'
                '1..............................................1'
                '1..............................................1'
                '1..............................................1'
                '1..............................................1'
                '1..............................................1'
                '1..............................................1'
                '1..............................................1'
                '1..............................................1'
                '1..............................................1'
                '111111111111111111111111111111111111111111111111'
            ))
        ], 0, 0, spotled.Effect.NONE).serialize()
    )
)

See the example_monika.py file for an example animation and example_pepsi.py for an example scrolling bitmap text display. You can replay existing payloads from Wireshark as well fairly easily by using the SendDataCommand and chopping off the header (first 15 bytes).

Fonts from this software are from https://www.cl.cam.ac.uk/~mgk25/ucs-fonts.html and are public domain.

You can get more fonts here: https://github.com/robhagemans/hoard-of-bitfonts